diff --git a/src/test_lib_json/main.cpp b/src/test_lib_json/main.cpp
index aeb8a26..f477d27 100644
--- a/src/test_lib_json/main.cpp
+++ b/src/test_lib_json/main.cpp
@@ -1817,7 +1817,7 @@ JSONTEST_FIXTURE_LOCAL(ValueTest, StaticString) {
 
 JSONTEST_FIXTURE_LOCAL(ValueTest, WideString) {
   // https://github.com/open-source-parsers/jsoncpp/issues/756
-  const std::string uni = u8"\u5f0f\uff0c\u8fdb"; // "式，进"
+  const std::string uni = reinterpret_cast<const char*>(u8"\u5f0f\uff0c\u8fdb"); // "式，进"
   std::string styled;
   {
     Json::Value v;
@@ -2905,8 +2905,8 @@ JSONTEST_FIXTURE_LOCAL(ReaderTest, strictModeParseNumber) {
 }
 
 JSONTEST_FIXTURE_LOCAL(ReaderTest, parseChineseWithOneError) {
-  checkParse(R"({ "pr)"
-             u8"\u4f50\u85e4" // 佐藤
+  checkParse(R"({ "pr)" + 
+             std::string(reinterpret_cast<const char*>(u8"\u4f50\u85e4")) + // 佐藤
              R"(erty" :: "value" })",
              {{18, 19, "Syntax error: value, object or array expected."}},
              "* Line 1, Column 19\n  Syntax error: value, object or array "
@@ -3008,7 +3008,7 @@ JSONTEST_FIXTURE_LOCAL(CharReaderTest, parseString) {
     bool ok = reader->parse(doc, doc + std::strlen(doc), &root, &errs);
     JSONTEST_ASSERT(ok);
     JSONTEST_ASSERT(errs.empty());
-    JSONTEST_ASSERT_EQUAL(u8"\u8A2a", root[0].asString()); // "訪"
+    JSONTEST_ASSERT_EQUAL((const char*)u8"\u8A2a", root[0].asString()); // "訪"
   }
   {
     char const doc[] = R"([ "\uD801" ])";